[C. Edmund Wright]

you forgot to include the meaning of the word "relatively" in your analysis - and compared to deep water, compared to windmills, etc, this IS relatively low cost.

[thackney]

meaning of the word "relatively" in your analysis - and compared to deep water

Measured on a "per barrel of oil produced", I don't think deep water is expensive compared to other oil facilities. The cost a bunch of money, but they produce a bunch of oil.

Solar, Wind, yeah those are more expensive. But to call it "relatively low cost" when it cost as much or more than 80~90% of all other the energy produced, is fraud.